netdev - Re: VLAN over GRE segfault

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Message-ID: <1300436792.2888.0.camel@edumazet-laptop>
Date:	Fri, 18 Mar 2011 09:26:32 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Diddi Oscarsson <diddi@...di.se>
Cc:	netdev@...r.kernel.org
Subject: Re: VLAN over GRE segfault

Le vendredi 18 mars 2011 à 08:34 +0100, Diddi Oscarsson a écrit :
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Hello!
> 
> I was trying to get ethernet over GRE to work when I found an obvious
> way NOT to do it.
> Basically I created a VLAN interface from the GRE interface (even
> though I had my fair doubts it would work) which gave me a nice segfault.
> The problem with this is that after the segfault, new network
> connections cannot be made (ping, ssh, http, whatever) and a reboot of
> the computer is necessary.
> I think an error message needs to be added when trying an operation
> like this.

Hmm, thanks for the report, I'll submit a patch to fix this
(NETIF_F_VLAN_CHALLENGED needed on some devices)


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